# mask-border-width

https://developer.mozilla.org/en-US/docs/Web/CSS/mask-border-width

## auto
```css
.selector {
  composes: auto from 'hydrogencss/mask-border-width.css'
}
```

or:
```css
.selector {
  composes: auto from 'hydrogencss/mask-border-width/auto.css'
}
```